Motor truck frame



Aug. 13, 1935. M. .LVGALVIN 2,011,241

MOTCR TRUCK FRAME Filed Jan. 1e, 1935 wwwa Patented Aug. 13, 1935 UNITED strates v PATENT ortie-E Mo'roR TRUCK FRAME Michael J. Galvin, Chicago, 1u. Application January 16, 103s, serial No. 652,065

1 Claim.

This invention relates to a motor truck chassis or frame. An object of the invention is to pro-- vide a truck frame consisting of side members and cross members provided witha series of angle braces in the plane of the frame to strengthen the same and prevent distortion due to twisting or impact against the corners of the frame.A For this purpose the side members and cross members of the frameare constructed of I-beams suitably joined by means of angle irons riveted thereo being flattened out to t against `the central portion :of the web of a cross beam and the end por-` tions of the braces being bent at an angle to t of four sets of angle braces.

between the front cross beam and the next crossl against the web portion of the side beams. In the particular construction shown in the drawing there arefour cross beams threeof which toward the rear of the frame are braced by means No braces are used beam toward the rear of the frame. Between these two cross beams are arranged supports for the motor ofthe vehicle. Referring to the drawing, which is made part Vof this application and in which similar reference characters indicate similar parts:

Fig. 1 is a plan view of a truck frame such as referred to above, I Fig. 2 is a side view of the construction shown in Fig. l, also showing the springs and spring shackles with the springs attached to the front and rear axles which areshown in section,l

Fig. 3 is aview in section on the line 3 3 of Fig. 1, and

Fig. 4 is an enlarged sectional view on the line 4-4 of Fig. l.

Referring to Fig. 1 of the drawing the side I beams I are connected by the cross I beams 2,

. 6. These 4brackets are riveted to the web por.v

tions of the side beams and cross beams. It will be noted that the end beams 2 and 5 have only a single set of brackets or angle irons 6 whereas the cross beams 3 and 4 are attached to the side f bracket and the side frame I about 30.

beams I by means of a double set o brackets, one on each side of each cross beam.

In addition tothe strengthening of the frame due to the construction just referred to in which the cross beams are `riveted to the side beams there are provided between the cross beams 3, 4, and a series of angle braces of a V-shape as indicated at l. As stated before these braces are channel irons having their web portions at the ends of each set riveted to the web of the corresponding side beam as indicated at 8. The central portion of each channel iron is straight and is attached to the corresponding cross beam by means of rivets as indicated at 9. It will be noted from an inspection of Fig. l of the drawing that the angle between the brace 'l and the cross beam 3 is substantially 60 and between the This arrangement of braces gives a very strong frame and prevents bending or twisting of the frame and also distortion due to impact against front or rear corners thereof. It will be observed also that the depth of the channel iron forming the braces is the same as the distance between the flanges of the I beams forming the side members and crossV members of the frame sothat a fairly tight fit is made when the angle braces are placed in position before being riveted to these members.

As indicated in Fig. 2 the front axle is shown in section at 9' and has mounted thereon the usual leaf spring construction I8 which by means of shackles II are attached to the side members of the frame by means of brackets I2 which are riveted thereto. The rear axle is shown at I3 and the same arrangement of springs and spring supports is employed as at the front of the frame. The brackets I2 at the rear end of the frame are attached to the web of the side member by means of the same rivets 8 which attach the ends of the brace` 'I to the side members. The front bracket I2 is also riveted to the side members I by rivets `which also pass through the angle iron 6. In. Figs. 3 and 4 there is shown an opening I4 through the cross beam 4 and the braces 'l for the reception of an operating part of the vehicle. At the rear of the frame there is provided a hook I5 attached to the rear cross frame 5 for the attachment of a trailer or chain for any suitable purpose.

In Fig. 1 the motorand its supports are shown diagrammatically at I6.

` It will be apparent from the above description that an automobile chassis or frame as disclosed herein is capable of resisting torsion or twisting and is also suitably braced to prevent distortion due to impact against the corners ci the frame as Well as against impact along the side of the frame. The angle braces 'l' prevent twisting of the frame in its own plane and substantially resists strains in any direction. These angle braces being formed of a single piece are easy to manufacture and are readily adapted for application to the lother members of the frame and prevent any substantial twisting or distortion thereof.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

A fabricated rectangular truck frame comprising parallel standard side I-beams, standard parallel cross I-beams of the same depth as the side beams, angle irons fitting between the flanges of said side and cross beams and fixed to said beams, and V-shaped channel members tting at their ends between the flanges of the respective side beams and having a flattened apex portion fitting between the anges of a cross beam,

said channel members being fixed to said side 10 and cross beams.

MICHAEL J. GALVIN. 

